Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 5

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The magnetic flux through a loop varies according to the relation $ϕ = 8 t^{2} + 6 t + C,$ Where $C$ is constant, $ϕ$ is in milliweber and $t$ is in second. What is the magnitude of induced e.m.f. in the loop at $t = 2$ seconds?

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Important Questions on Electromagnetic Induction

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 6

If the rod $P Q$ rotates with angular speed $ω$ about its mid-point $(M),$ and magnetic field $\vec{B}$ is out of the plane of motion, then emf induced between ends $P Q$ will be ( $P Q$ is the length of rod)

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 7

When $0.5 \mathrm{~A}$ current passes through an inductor coil, the flux linked with it is $0.15 \mathrm{~Wb}$, then the self-inductance of the coil is

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 8

If

N

is the number of turns in a coil, then self-inductance varies as (length and cross sectional area is same)

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 9

An AC generator converts

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 10

The energy stored in an inductor of self-inductance

L

carrying current

I

is

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 12

Inductance is the ratio of total magnetic flux linkage to _____ .

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 13

The magnetic flux linked with a coil is changing with time

t

(second) according to

ϕ = 6 t^{2} - 5 t + 1 .

Where ϕ is in Wb. At

t = 0.5 S,

the induced current in the coil is _____. The resistance of the circuit is

10 Ω .

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Gamma Question Bank for Medical Physics>Chapter 21 - Electromagnetic Induction>Assignment Set-1>Q 14

The magnetic energy per unit volume is equal to _____ .